FX SPS is intended to be used as an information tool to assist in the preoperative surgical planning and visualization of a primary total shoulder replacement.
Device Story
FX SPS is a standalone web-based software for preoperative planning of primary total shoulder arthroplasty. Input consists of patient CT images. Workflow requires manual segmentation to build 3D bone models of the shoulder and placement of anatomical landmarks. Surgeons use the interface to virtually position shoulder prosthesis components from an integrated library onto the 3D reconstruction. The software allows movement of components in all directions to optimize fit. Output is a planning report containing preoperative and planned parameters for use during surgery. The device is used by surgeons in a clinical setting to assist in surgical decision-making and implant selection. It does not provide automated implant sizing predictions, ensuring the surgeon retains full control over the planning process.
Clinical Evidence
Bench testing only. Software verification and validation conducted per IEC 62304 (moderate level of concern). Performance testing confirmed angle accuracy within 1 degree and gap measurement accuracy within 1 mm. Human factors validation performed per IEC 62366-1 with intended users confirmed that user needs and intended use requirements were met.
Technological Characteristics
Web-based software; utilizes CT-scan images; manual segmentation for 3D model reconstruction; supports anatomical and reverse shoulder implants; includes milling tool; provides 2D/3D visualization of humerus and scapula; user-profile-based access control; standalone deployment.
Indications for Use
Indicated for preoperative surgical planning and visualization of primary total shoulder replacement in patients requiring shoulder arthroplasty.
Regulatory Classification
Identification
A medical image management and processing system is a device that provides one or more capabilities relating to the review and digital processing of medical images for the purposes of interpretation by a trained practitioner of disease detection, diagnosis, or patient management. The software components may provide advanced or complex image processing functions for image manipulation, enhancement, or quantification that are intended for use in the interpretation and analysis of medical images. Advanced image manipulation functions may include image segmentation, multimodality image registration, or 3D visualization. Complex quantitative functions may include semi-automated measurements or time-series measurements.
Special Controls
*Classification.* Class II (special controls; voluntary standards—Digital Imaging and Communications in Medicine (DICOM) Std., Joint Photographic Experts Group (JPEG) Std., Society of Motion Picture and Television Engineers (SMPTE) Test Pattern).
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Pixee Medical % Agathe Joet Quality & Regulatory Affairs Engineer 18 rue Alain Savary Besancon, 25000 FRANCE
Re: K213922
July 22, 2022
Trade/Device Name: FX SPS Regulation Number: 21 CFR 892.2050 Regulation Name: Medical image management and processing system Regulatory Class: Class II Product Code: LLZ Dated: June 15, 2022 Received: June 21, 2022
Dear Agathe Joet:
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database located at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801 and Part 809); medical device reporting of medical device-related adverse events) (21 CFR
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803) for devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.
For comprehensive regulatory information about medical devices and radiation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely,
Jessica Lamb. Ph.D. Assistant Director Imaging Software Team DHT8B: Division of Radiological Imaging Devices and Electronic Products OHT8: Office of Radiological Health Office of Product Evaluation and Quality Center for Devices and Radiological Health
Enclosure
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510(k) Number (if known)
### K213922
Device Name
FX SPS
Indications for Use (Describe)
FX SPS is intended to be used as an information tool to assist in the preoperative surgical planning and visualization of a primary total shoulder replacement.
Type of Use (Select one or both, as applicable)
図 Prescription Use (Part 21 CFR 801 Subpart D)
□ Over-The-Counter Use (21 CFR 801 Subpart C)
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### 510(k) SUMMARY
### Pixee Medical's FX SPS
## 510(k) Submitter:
Name: Pixee Medical Address: 18 rue Alain Savary 25000 Besançon FRANCE
Phone: (+33) 4 58 10 13 65 Fax: (+33) 4 58 10 14 51
Contact Person: Agathe JOËT
Date Prepared: July 20, 2022
## Device:
Trade name: FX SPS Common name: Planning software for Total Shoulder Arthroplasty Classification name: System, Image Processing, Radiological (21 CFR §892.2050) Product code: LLZ Regulatory class: II Classification Panel: Radiology
## Predicate Device:
FX SPS is substantially equivalent to the legally marketed e-ortho Shoulder Software.
| Applicant Name | Device Name | Product code | 510(k) number |
|----------------|---------------------------|--------------|---------------|
| FH INDUSTRIE | e-Ortho Shoulder Software | LLZ | K201928 |
No reference devices were used in this submission.
## Device Description:
FX SPS is a preoperative standalone web-based medical software used for the planning of primary shoulder replacement from CT-images. It comprises a secure database which enables the patient's cases management and the access to the planning interface.
Preliminary to the planning, a manual segmentation needs to be performed from the patient's CTimages. The segmentation process consists in building 3D bone models of the patient's shoulder and positioning anatomic landmarks on it. Once these data are generated, their compliance is checked. They are then imported into the FX SPS's database making the planning available for the surgeon.
The planning step involves virtually positioning of the shoulder prosthesis on the 3D reconstruction of the patient's shoulder. On that purpose, the surgeon chooses implants from a library of implants.
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Afterwards, he selects the size of the implant more suitable to the joint and he can move prosthesis components in all directions. Once the positioning of the implant is satisfying, he validates the planning to generate a planning report.
During surgery, he will have at its disposal the planning report comprising preoperative and planned parameters.
## Intended use / Indications for Use:
FX SPS is intended to be used as an information tool to assist in the preoperative surgical planning and visualization of a primary total shoulder replacement.
## Substantial equivalence:
#### Comparison of Intended Use / Indications for Use: .
FX SPS and the e-Ortho Shoulder Software are both web-based software indicated for primary total shoulder arthroplasty. Both devices are intended to be used as an information tool to assist in the preoperative surgical planning and visualization of a primary Total Shoulder Replacement. Thus, there is no difference between the subject device and the predicate device with respect to indications and intended use.
#### . Comparison of Operating principle
They both use CT-images of patients to reconstruct 3D models of the shoulder joint and to position anatomical landmarks through a manual segmentation process. In addition, they both allow the surgeons to perform a preoperative planning by enabling reverse and anatomical implant visualization and positioning within the specific patient's bone models. Furthermore, both devices compute and display pre-operative parameters. Both devices generate a downloadable planning report. Thus, FX SPS and E-ortho have the same principle of operation.
#### Comparison of technological characteristics with the predicate device: .
At a high level, the subject and predicate devices are based on the following same technological elements:
- . Both are web-based software used pre-operatively;
- . Both use CT-scan images;
- Both inteqrate anatomic and reverse shoulder implants; .
- Both rely on manual segmentation for 3D models reconstruction; .
- . Both function with user profiles determining the possible user's actions;
- Both manage the cases from a list of patients; .
- Both provide to the user a milling tool; .
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- Both integrate 3D and 2D representation of the humerus and the scapula. .
The following technological difference exists between the subject and predicate devices:
- E-ortho provides software prediction of optimal implant sizing while FX SPS does not. .
Discussion regarding the technological characteristics:
| Technological<br>characteristics | FX SPS (Device<br>subject of this<br>application) | E-Ortho Shoulder<br>Software K201928<br>(Predicate device) | Discussion |
|----------------------------------|-------------------------------------------------------------------|-------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Type of software | Web-based software | Web-based software | Identical |
| Use time | Pre-operatively | Pre-operatively | Identical |
| Imaging used | CT-scan images | CT-scan images | Identical |
| Type of implants<br>planned | Anatomical and<br>reverse shoulder<br>implants | Anatomical and<br>reverse shoulder<br>implants | Identical |
| Manual/automatic<br>segmentation | Manual<br>segmentation<br>performed. | Manual<br>segmentation<br>performed | Identical |
| User profiles | User profiles define<br>the authorized<br>actions for the user. | User profiles define<br>the authorized<br>actions for the user. | Identical |
| Case<br>management | List of cases | List of cases | Identical |
| Tools | Milling tool | Milling tool | Identical |
| Anatomy<br>representation | 3D and 2D<br>representation of the<br>humerus and the<br>scapula. | 3D and 2D<br>representation of the<br>humerus and the<br>scapula. | Identical |
| Recommandations | Does not include any<br>predictions and<br>recommendations. | Include software<br>prediction of optimal<br>implant sizing. | While the E-ortho software<br>includes prediction of optimal<br>implant sizing, FX SPS does<br>not. Yes, it makes FX SPS<br>less critical regarding to the<br>safety, as the surgeon's<br>planning is not influenced |
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The minor difference in technological characteristics between the subject device and the predicate does not alter the intended use of the device and does not raise new questions of safety nor effectiveness.
## Non-Clinical Performance Data:
The following testing was conducted to evaluate the device:
- . Software verification and validation testing were conducted as required by IEC 62304 and documentation was provided as recommended by the FDA Guidance "Content of Premarket Submissions for Software Contained in Medical Devices". The FX SPS software was considered as a software with a "moderate" level of concern. All performance testing demonstrated that FX SPS performs according to its specifications and functions as intended.
- Concerning the angle or gap measurements, software verification and validation testing . were conducted. All performance testing demonstrated that FX SPS performs according to its specifications and functions as intended to ensure the required angle accuracy of 1 degree and gap measurement accuracy of 1 mm.
- User needs validation The software was validated with intended users through a human . factor test series to ensure the user needs and intended use requirements were met, in accordance with IEC 62366-1. All requirements were met and no new issues of safety or effectiveness were raised.
Therefore, the nonclinical tests demonstrate that the device is as safe, as effective, and performs as well as the predicate device.
## Conclusion:
FX SPS has the same intended use, indications and principle of operation as its predicate device, as well as similar technological characteristics. The minor differences in technological characteristics do not alter the intended use of the device and do not raise new questions of safety and effectiveness, and performance data demonstrated that FX SPS is as safe and effective as the E-ortho shoulder software. Thus, the FX SPS software is substantially equivalent to the legally marketed predicate device.
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1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
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Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
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Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
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Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
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Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
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Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
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Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
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Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
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Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
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Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
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Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
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A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
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Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.